Pelliott321 wrote:
Thanks, Dave
Any guess what effect in adding fill to a bass-reflex would have.
What is the sound of an overdamped woofer in a bass-reflex cabinet
The woofers were made selectively more rigid by saturating a square-shaped woofer cone area with a polymer otherwise known as Varathane® along with a lowered fee-air resonance by virtue of an additional 30 grams of weight added to the woofer perimeter. Additionally, the empty cavity under the dust cap was treated with acoustic fill to eliminate that detail-smearing cavity resonance. That helped the upper mid-range performance and integration with the horn. Also, the cabinets were tuned with the end result of minimum box coloration, a neutral mid-range, and detailed bass performance. Part of that scheme was the addition of a 2-inch thick baffle to lengthen the path from the woofer to the vents on either side of the horn. I ended up with what I call a “half-ass” transmission line as opposed to the original vented-reflex design. Overall the speakers went from lower response of about 45-Hz. to 31-Hz. Bass and the lower mid-range tightened up dramatically. Those of you that have been here have heard the end result.